/* ===== Sonna Landing Page — Shared Styles ===== */

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Brand colors (matching Flutter theme) */
  --primary: #1565c0;
  --primary-light: #1e88e5;
  --primary-dark: #0d47a1;
  --primary-container: #d6e3ff;
  --secondary: #475e78;
  --tertiary: #00897b;
  --surface: #f8fafe;
  --surface-dim: #eef1f6;
  --on-surface: #1a1c1e;
  --on-surface-muted: #5a5e66;
  --error: #dc3545;
  --white: #ffffff;
  --card-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  --card-shadow-hover: 0 6px 24px rgba(21, 101, 192, 0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --max-width: 1120px;
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI',
    Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--on-surface);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--primary-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Navigation ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--on-surface);
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  object-fit: cover;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav__links a {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--on-surface-muted);
}
.nav__links a:hover {
  color: var(--primary);
}

/* Mobile nav toggle */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--on-surface);
  margin: 5px 0;
  border-radius: 2px;
  transition: var(--transition);
}

/* ---------- Hero ---------- */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  background: linear-gradient(180deg, var(--surface) 0%, var(--white) 100%);
}

.hero__badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  background: var(--primary-container);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero__title span {
  background: linear-gradient(135deg, var(--primary), var(--tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--on-surface-muted);
  max-width: 580px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  background: var(--primary);
  color: var(--white);
  font-weight: 600;
  font-size: 1rem;
  transition: background var(--transition), transform var(--transition);
}
.hero__cta:hover {
  background: var(--primary-dark);
  color: var(--white);
  transform: translateY(-1px);
}

/* ---------- Features ---------- */
.features {
  padding: 80px 0;
}

.section-label {
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-title {
  text-align: center;
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 48px;
  letter-spacing: -0.01em;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 32px 28px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid rgba(0, 0, 0, 0.06);
  transition: box-shadow var(--transition), transform var(--transition);
}
.feature-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-3px);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}
.feature-card__icon--record {
  background: #fce4ec;
  color: #e53935;
}
.feature-card__icon--transcript {
  background: var(--primary-container);
  color: var(--primary);
}
.feature-card__icon--summary {
  background: #e0f2f1;
  color: var(--tertiary);
}
.feature-card__icon--ask {
  background: #f3e5f5;
  color: #8e24aa;
}
.feature-card__icon--export {
  background: #fff3e0;
  color: #ef6c00;
}
.feature-card__icon--secure {
  background: #e8f5e9;
  color: #2e7d32;
}

.feature-card__title {
  font-size: 1.1rem;
  font-weight: 650;
  margin-bottom: 8px;
}

.feature-card__desc {
  font-size: 0.92rem;
  color: var(--on-surface-muted);
  line-height: 1.6;
}

/* ---------- How It Works ---------- */
.how-it-works {
  padding: 80px 0;
  background: var(--surface);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.step {
  text-align: center;
}

.step__number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.step__title {
  font-size: 1.1rem;
  font-weight: 650;
  margin-bottom: 8px;
}

.step__desc {
  font-size: 0.92rem;
  color: var(--on-surface-muted);
  max-width: 280px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ---------- Security / Privacy Banner ---------- */
.security {
  padding: 64px 0;
}

.security__inner {
  display: flex;
  align-items: center;
  gap: 48px;
  padding: 48px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #0d47a1, var(--primary));
  color: var(--white);
}

.security__text {
  flex: 1;
}

.security__text h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.security__text p {
  font-size: 0.95rem;
  opacity: 0.9;
  line-height: 1.7;
}

.security__badges {
  display: flex;
  gap: 20px;
  flex-shrink: 0;
}

.security__badge {
  text-align: center;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
}

.security__badge-icon {
  font-size: 28px;
  margin-bottom: 6px;
}

.security__badge-label {
  font-size: 0.78rem;
  font-weight: 600;
  opacity: 0.9;
}

/* ---------- Footer ---------- */
.footer {
  padding: 48px 0 32px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer__brand p {
  font-size: 0.88rem;
  color: var(--on-surface-muted);
  margin-top: 8px;
  max-width: 280px;
  line-height: 1.6;
}

.footer__col h4 {
  font-size: 0.85rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
  color: var(--on-surface);
}

.footer__col ul {
  list-style: none;
}

.footer__col li {
  margin-bottom: 10px;
}

.footer__col a {
  font-size: 0.88rem;
  color: var(--on-surface-muted);
}
.footer__col a:hover {
  color: var(--primary);
}

.footer__bottom {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--on-surface-muted);
}

/* ---------- Legal Pages (Privacy, Terms, Support) ---------- */
.legal {
  padding: 60px 0 80px;
}

.legal__header {
  text-align: center;
  margin-bottom: 48px;
}

.legal__header h1 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 8px;
}

.legal__header p {
  color: var(--on-surface-muted);
  font-size: 0.92rem;
}

.legal__content {
  max-width: 760px;
  margin: 0 auto;
}

.legal__content h2 {
  font-size: 1.3rem;
  font-weight: 650;
  margin: 36px 0 12px;
  color: var(--on-surface);
}

.legal__content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 24px 0 8px;
  color: var(--on-surface);
}

.legal__content p,
.legal__content li {
  font-size: 0.94rem;
  color: var(--on-surface-muted);
  line-height: 1.75;
  margin-bottom: 12px;
}

.legal__content ul,
.legal__content ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.legal__content li {
  margin-bottom: 6px;
}

.legal__content strong {
  color: var(--on-surface);
}

.legal__content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal__content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 24px;
  font-size: 0.9rem;
}

.legal__content th,
.legal__content td {
  text-align: left;
  padding: 10px 14px;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.legal__content th {
  background: var(--surface);
  font-weight: 600;
  color: var(--on-surface);
}

.legal__content td {
  color: var(--on-surface-muted);
}

/* ---------- Support Page ---------- */
.support-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 760px;
  margin: 0 auto;
}

.support-card {
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid rgba(0, 0, 0, 0.06);
  transition: box-shadow var(--transition);
}
.support-card:hover {
  box-shadow: var(--card-shadow);
}

.support-card__icon {
  font-size: 32px;
  margin-bottom: 14px;
}

.support-card h3 {
  font-size: 1.05rem;
  font-weight: 650;
  margin-bottom: 8px;
}

.support-card p {
  font-size: 0.9rem;
  color: var(--on-surface-muted);
  line-height: 1.6;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .nav__links {
    display: none;
  }
  .nav__toggle {
    display: block;
  }

  /* Mobile menu */
  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 20px 24px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    gap: 16px;
  }

  .hero {
    padding: 48px 0 40px;
  }

  .features__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .security__inner {
    flex-direction: column;
    padding: 32px 24px;
    text-align: center;
  }

  .security__badges {
    flex-wrap: wrap;
    justify-content: center;
  }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer__brand {
    grid-column: 1 / -1;
  }

  .footer__bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .support-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .features__grid {
    gap: 12px;
  }

  .feature-card {
    padding: 24px 20px;
  }

  .footer__inner {
    grid-template-columns: 1fr;
  }
}